Permutation-lock.



A. S. ELLIOT.

PERMUTATION LOCK.

APPLICATION FILED JUNE 3. 1914. 1,159,479. I Patented Nov. 9, 1915.

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' A. S. ELLIOT.

PERMUTATION LOCK.

APPLICATION FILED JUNE 3.1914.

Patented Nov. 9,1915.

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citizen of the United States,

ADAM S. ELLIOT, 015 DETROIT, MICHIGAN.

PERMU'lATION-LOCK.

Application filed June 3, 1914.

To all whom it mag concern Be it known that I, ADAM S. ELLIOT, a residing at Detroit, in the county of Wayne and State of Michigan, have ini ented new and useful Improvements in Permutation Locks, of which the following is a specification.

This invention relates to improvements in permutation locks and has particular application to a lock for controlling the switches of ignition systems of internal combustion engines of motor vehicles, motor boats and the like.

In carrying out the present invention, it is my purpose to provide a permutation lock whereby the switch may be locked in open position so as to prevent closing of the switch by unauthorized persons, thereby eliminating the possibility of theft.

It is also my purpose to provide a lock of the class described which will embrace the desired features of simplicity, efliciency and durability, which may be installed quickly and conveniently eiliciently and purpose.

With the above and other objects in view, the invention consists in the construction, combination and arrangement of parts here inafter set forth in and falling within the scope of the claims.

In the accompanying drawings; Figure 1 is a view in end elevation of a permutation effectively for its intended .lock constructed in accordance with the present invention. Fig. 2 is a view in side elevation thereof, parts being shown in section. Fi 3 is a transverse sectional view taken on the line 4-4: ofFig. 2. Fig. 4: is a transverse sectional view taken on the line of Fig. 2'. Fig. 5 is a sectional view on the line 6-6 of Fig. 3, the parts being shown on an enlarged scale. F ig. 6 is a side elevation of a detail of the invention.

Referring now to-the drawings in detail, 1 indicates a casing which, in the present instance, is circular in cross section, and closing the opposite ends of the casing 1 are heads 2, 3 detachably connected with the casing. Arranged longitudinally of the casing 1 centrally thereof and having the opposite ends thereof journaled in horizontally alining bearings carried bythe heads 2 and 3 is a shaft 4, one end of which projects beyond the head 2 and is equipped with an oprating handle 5 by means of which the shaft rotated whilethe opposite end Specification of Letters Patent.

and which will operate Patented Nov. 9, 1915. Serial No. 842,747.

is adapted to be connected to the mechanism or device to be locked.

The permutation locking mechanism con trolling the rotation of the shaft 4 under the action of the handle 5 comprises longitudinal-abutments 16, 16 seated within slots 17, 17 formed in the central portion of the shaft f at diametrically opposite points. Extending outwardly from the side wall of the casing 1 at diametrically opposite points are rows of circular sleeves 19, opening into the casing. In the present instance, these sleeves are ten in number, five beingin each row. Connected with the inner wall of the casing l'in advance of each sleeve 19 with respect to the direction of rotation of the shaft 4 is a guide 18 preferably circular in cross section and slidably mounted within the guides 18 are looking bolts 19 adapted to be projected into the path of movement of the abutments 17 on the shaft l to hold the latter against rotation under the action of the handle 5. Arranged longitudinally of the casing within the latter and disposed at diametrically opposite points are pivot rods 20, 20 each disposed adjacent to the inner ends of one row of sleeves 19 immediately behind the adjacent row of guides 18 and pivoted upon each rod 20 is a set of arcuate shaped levers 21 corresponding in number with the number of bolts 19 and each disposed in a plane at one side of one of the guides. The forward ends of the levers 21 on each rod are formed with elongated slots 22 receiving pins 23 projecting outwardly from the adjacent side of the proximate bolt 19, while passed through the extremity of each lever is a headed bolt 24 having the head. thereof formed with a slot 25 and the free end screw threaded to receive a nut 26.

Mounted within the slots 25 in the heads of the bolts 24 and capable of sliding movement therein are leaf springs 27, while formed integral with each lever 21 at the center thereof and projecting radially therefrom is a lug 28 having the outer end beveled downwardly from opposite sides of the center line as at 29. These lugs 28 are coaxial with the respective sleeves 19 and slidably mounted within each sleeve is a plunger 30 having the inner end thereof beveled as at 31 on an incline corresponding with the inclination of the beveled portions of the coacting lugs 28 and the outer end thereof formed with an outwardly. projecting axially alining stud 32 whereby the plunger may be forced toward the center of the casing.

In practice, the springs 27 on certain of the levers 21 are adjusted within the slots 25 in the heads of the bolts 2% so that the outer extremities thereof engage the inner wall of the casing 1 thereby elevating the bolt ends of the levers and holding the respective bolts 19 out of the path of the abutments, while the springs 27 carried by the remaining levers 21 are adjusted within the slots in the heads of the bolts on such levers so that the inner ends thereof lie against the shaft 4 thereby holding the particular looking bolts in the path of movement of the abutments on the shaft, the plungers coacting with the lastmentioned levers being positioned within the sleeves so that the bev- 'eled inner ends thereof coact with the forward beveled portions of the cooperating lugs 28. Thus, when the last-mentioned plungers are actuated simultaneously, the

levers 21 controlled thereby will be swung about the pivot rods 20 with the effect to move the locking bolts out of the path of the abutments against the action of the springs 27, while if any or all of the first plunger-s are actuated the dogs controlled thereby will be thrown into the path of the abutment-s so that rotation of the shaft to manipulate the switch will be prevented.

To illustrate, let it be assumed that the locking bolts controlled by the first and third plungers from the left in the top row in Fig; 2 of the drawings are in the path of movement of the abutments and the locking bolts controlled by the second and fourth plungers from the left in the bottom row of Fig. 2 of the drawings in the path of the abutments, and the remaining locking bolts inactive or out of the path of the abutments, it will be seen that when the first and third plungers in the top row and the second and fourth plungers in the bottom row are pushed inwardly the locking bolts will be withdrawn from the path of the abutments so that the shaft will be rotated to actuate the switch, while if any one of the said plunger-s remains uninfluenced, the particular locking bolt controlled thereby will re main in the path of'the abutments and prevent rotation of the shaft. Likewise, if one of the plungers controlling the inactive bolts should be pushed inwardly, the particular bolt controlled thereby will be moved into the-path of the abutments and so prevent rotation of the shaft.

When it is desired to change the combination of the locking mechanism controlling the switch, any one or all of the springs controlling the normally active bolts may be adjusted within the slots in the heads of the bolts so as to throw the locking bolts out of the path of the abutments, while any one or all of the springs carried by the remaining levers may be reversed so as to render such levers normally active, the corresponding plungers being reversed so that the beveled the claims without departing from the spirit of the invention.

Iclaim: 1. In a permutation look, a shaft capable abutment, means for holding said bolts in and out of the path of said abutments inde-.

pendently of one another, and individual 'of rotation, longitudinal abutments secured actuating devices for swinging said bolts;

against the action of said holding means.

2. In a permutation lock, a shaft capable of'rotation, longitudinal abutments secured to said shaft. at diametrically opposite points, a plurality of bolts adjacent to each abutment, means for holding said bolts in and out of the path of said abutmentsindependently of one another, individual actuating devices for swinging said bolts against the action of said holding means, said 'hold- 1 I ing means being changeable whereby certain of the bolts may be rendered active and the remaining bolts inactive.

3. In a permutation lock, a shaft capable of rotation, longitudinal abutments secured to said shaft at diametrically opposite points, a plurality of bolts adjacent to each abutment, means for holding said bolts in V and out of the path of said abutments independently of one another, and individual plungers for sliding said bolts against the action of said holding means.

4-. In a permutation look, a shaft capable of rotation, longitudinal abutments secured to. said shaft at diametrically opposite points, a plurality of bolts adjacent to each abutment, levers for operating said bolts, means carried by said levers for holding said bolts in and out of the path of said abutments independently of one another,

and individual actuating devices for swinging said levers to slide said bolts against the action of said holding means.

5. In a permutation lock, a shaft capable of rotation, longitudinal abutments secured to said shaft at diametrically opposite points, a plurality of bolts adjacent to each abutment, levers for operating said bolts,

means carried by said levers for holding said bolts in and out of the path of said abutments independently of one anothenand in dividual plungers for swinging said levers to slide said bolts against the action of said holding means.

6. In a permutation look, a casing, a shaft journaled in said casing longitudinally thereof and capable of rotation, longitudinal abutments secured to said shaft at diametrically opposite points, a plurality of bolts adjacent to each abutment, levers pivoted Within said casing and connected With said bolts, springs carried by said levers for holding said bolts in and out of the path of said abutments independently of one another, and individual plungers slidable with in said casing for swinging said bolts against the action of said holding springs.

7. In a permutation look a casing, a shaft journaled in said casing longitudinally thereof and capable of rotation and having longitudinal abutments thereon at diametrically opposite points, a plurality of levers pivoted within said casing adjacent to each abutment and controlling said shaft through the medium of said abutment, means acting upon said levers to hold the same active and inactive independently of one another and individual actuating devices for moving said levers against the action of said holding means.

In testimony whereof I afiiX my signature in presence of tWo Witnesses.

ADAM S. ELLIOT.

Witnesses:

WILLIAM G. LEONARD, JAMES CoWIE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. O. 

